./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46c0d9f9d80db77d4c60fa541a095100d438c0f00ce4cea8ddaeb964f10aa3ad --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:45:04,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:45:04,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:45:04,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:45:04,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:45:04,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:45:04,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:45:04,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:45:04,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:45:04,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:45:04,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:45:04,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:45:04,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:45:04,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:45:04,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:45:04,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:45:04,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:45:04,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:45:04,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:45:04,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:45:04,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:45:04,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:45:04,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:45:04,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:45:04,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:45:04,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:45:04,483 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:45:04,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:45:04,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:45:04,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:45:04,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:45:04,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:45:04,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:45:04,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:45:04,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:45:04,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:45:04,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:45:04,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:45:04,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:45:04,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:45:04,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:45:04,498 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:45:04,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:45:04,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:45:04,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:45:04,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:45:04,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:45:04,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:45:04,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:45:04,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:45:04,523 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:45:04,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:45:04,524 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:45:04,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:45:04,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:45:04,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:45:04,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:45:04,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:45:04,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:45:04,525 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:45:04,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:45:04,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:45:04,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:45:04,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:45:04,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:45:04,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:45:04,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:45:04,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:45:04,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:45:04,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:45:04,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:45:04,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:45:04,527 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:45:04,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:45:04,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:45:04,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:45:04,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46c0d9f9d80db77d4c60fa541a095100d438c0f00ce4cea8ddaeb964f10aa3ad [2021-12-07 01:45:04,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:45:04,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:45:04,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:45:04,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:45:04,716 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:45:04,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2021-12-07 01:45:04,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/data/3b98d6af6/3778a670c840452581c0debda54aee90/FLAG66fa42b78 [2021-12-07 01:45:05,345 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:45:05,346 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2021-12-07 01:45:05,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/data/3b98d6af6/3778a670c840452581c0debda54aee90/FLAG66fa42b78 [2021-12-07 01:45:05,797 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/data/3b98d6af6/3778a670c840452581c0debda54aee90 [2021-12-07 01:45:05,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:45:05,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:45:05,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:45:05,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:45:05,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:45:05,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:45:05" (1/1) ... [2021-12-07 01:45:05,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90c1233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:05, skipping insertion in model container [2021-12-07 01:45:05,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:45:05" (1/1) ... [2021-12-07 01:45:05,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:45:05,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:45:06,154 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2021-12-07 01:45:06,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2021-12-07 01:45:06,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:45:06,722 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:45:06,742 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[8616,8629] [2021-12-07 01:45:06,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c[15552,15565] [2021-12-07 01:45:07,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:45:07,145 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:45:07,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07 WrapperNode [2021-12-07 01:45:07,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:45:07,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:45:07,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:45:07,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:45:07,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,437 INFO L137 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5031 [2021-12-07 01:45:07,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:45:07,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:45:07,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:45:07,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:45:07,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:45:07,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:45:07,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:45:07,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:45:07,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (1/1) ... [2021-12-07 01:45:07,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:45:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:07,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:45:07,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:45:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:45:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:45:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:45:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:45:07,919 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:45:07,921 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:45:10,544 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:45:10,559 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:45:10,559 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 01:45:10,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:45:10 BoogieIcfgContainer [2021-12-07 01:45:10,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:45:10,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:45:10,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:45:10,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:45:10,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:45:05" (1/3) ... [2021-12-07 01:45:10,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a68a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:45:10, skipping insertion in model container [2021-12-07 01:45:10,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:45:07" (2/3) ... [2021-12-07 01:45:10,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a68a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:45:10, skipping insertion in model container [2021-12-07 01:45:10,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:45:10" (3/3) ... [2021-12-07 01:45:10,567 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label05.c [2021-12-07 01:45:10,571 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:45:10,571 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-07 01:45:10,611 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:45:10,616 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:45:10,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-07 01:45:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:10,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:45:10,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:10,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:10,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:10,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:10,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1675876582, now seen corresponding path program 1 times [2021-12-07 01:45:10,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:10,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762076080] [2021-12-07 01:45:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:10,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:10,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:10,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762076080] [2021-12-07 01:45:10,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762076080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:10,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:10,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:45:10,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746703505] [2021-12-07 01:45:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:10,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:45:10,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:45:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:45:10,829 INFO L87 Difference]: Start difference. First operand has 893 states, 890 states have (on average 1.902247191011236) internal successors, (1693), 892 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:10,891 INFO L93 Difference]: Finished difference Result 1757 states and 3332 transitions. [2021-12-07 01:45:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:45:10,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-07 01:45:10,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:10,909 INFO L225 Difference]: With dead ends: 1757 [2021-12-07 01:45:10,909 INFO L226 Difference]: Without dead ends: 827 [2021-12-07 01:45:10,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:45:10,917 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:10,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:10,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-12-07 01:45:10,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2021-12-07 01:45:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 825 states have (on average 1.8909090909090909) internal successors, (1560), 826 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1560 transitions. [2021-12-07 01:45:10,982 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1560 transitions. Word has length 30 [2021-12-07 01:45:10,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:10,983 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1560 transitions. [2021-12-07 01:45:10,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:10,983 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1560 transitions. [2021-12-07 01:45:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-07 01:45:10,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:10,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:10,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:45:10,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:10,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:10,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1541863076, now seen corresponding path program 1 times [2021-12-07 01:45:10,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:10,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470884617] [2021-12-07 01:45:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:10,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:11,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:11,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470884617] [2021-12-07 01:45:11,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470884617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:11,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:11,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:45:11,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424113279] [2021-12-07 01:45:11,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:11,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:45:11,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:11,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:45:11,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:45:11,050 INFO L87 Difference]: Start difference. First operand 827 states and 1560 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:11,165 INFO L93 Difference]: Finished difference Result 919 states and 1702 transitions. [2021-12-07 01:45:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:45:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-07 01:45:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:11,172 INFO L225 Difference]: With dead ends: 919 [2021-12-07 01:45:11,172 INFO L226 Difference]: Without dead ends: 871 [2021-12-07 01:45:11,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:45:11,174 INFO L933 BasicCegarLoop]: 1556 mSDtfsCounter, 71 mSDsluCounter, 4640 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 6196 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:11,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 6196 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-12-07 01:45:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 827. [2021-12-07 01:45:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 825 states have (on average 1.863030303030303) internal successors, (1537), 826 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1537 transitions. [2021-12-07 01:45:11,197 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1537 transitions. Word has length 30 [2021-12-07 01:45:11,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:11,198 INFO L470 AbstractCegarLoop]: Abstraction has 827 states and 1537 transitions. [2021-12-07 01:45:11,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,198 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1537 transitions. [2021-12-07 01:45:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-07 01:45:11,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:11,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:11,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:45:11,200 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 159296799, now seen corresponding path program 1 times [2021-12-07 01:45:11,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:11,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632418893] [2021-12-07 01:45:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:11,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:11,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:11,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632418893] [2021-12-07 01:45:11,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632418893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:11,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:11,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:45:11,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890609128] [2021-12-07 01:45:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:11,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:45:11,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:45:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:11,274 INFO L87 Difference]: Start difference. First operand 827 states and 1537 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:11,298 INFO L93 Difference]: Finished difference Result 909 states and 1665 transitions. [2021-12-07 01:45:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:45:11,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-07 01:45:11,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:11,303 INFO L225 Difference]: With dead ends: 909 [2021-12-07 01:45:11,303 INFO L226 Difference]: Without dead ends: 865 [2021-12-07 01:45:11,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:11,305 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 1498 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:11,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1659 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:11,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-12-07 01:45:11,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 863. [2021-12-07 01:45:11,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8513356562137049) internal successors, (1594), 862 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1594 transitions. [2021-12-07 01:45:11,325 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1594 transitions. Word has length 52 [2021-12-07 01:45:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:11,325 INFO L470 AbstractCegarLoop]: Abstraction has 863 states and 1594 transitions. [2021-12-07 01:45:11,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1594 transitions. [2021-12-07 01:45:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-07 01:45:11,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:11,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:11,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:45:11,327 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:11,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1780734059, now seen corresponding path program 1 times [2021-12-07 01:45:11,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:11,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139685084] [2021-12-07 01:45:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:11,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:11,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:11,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139685084] [2021-12-07 01:45:11,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139685084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:11,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:11,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:45:11,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996939247] [2021-12-07 01:45:11,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:11,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:45:11,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:11,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:45:11,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:11,382 INFO L87 Difference]: Start difference. First operand 863 states and 1594 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:11,406 INFO L93 Difference]: Finished difference Result 1011 states and 1826 transitions. [2021-12-07 01:45:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:45:11,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-07 01:45:11,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:11,411 INFO L225 Difference]: With dead ends: 1011 [2021-12-07 01:45:11,411 INFO L226 Difference]: Without dead ends: 931 [2021-12-07 01:45:11,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:11,413 INFO L933 BasicCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:11,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1494 Valid, 1658 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-12-07 01:45:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2021-12-07 01:45:11,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.8306364617044228) internal successors, (1697), 928 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1697 transitions. [2021-12-07 01:45:11,434 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1697 transitions. Word has length 52 [2021-12-07 01:45:11,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:11,434 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 1697 transitions. [2021-12-07 01:45:11,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,434 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1697 transitions. [2021-12-07 01:45:11,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-07 01:45:11,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:11,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:11,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:45:11,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:11,437 INFO L85 PathProgramCache]: Analyzing trace with hash 919948555, now seen corresponding path program 1 times [2021-12-07 01:45:11,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:11,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348385588] [2021-12-07 01:45:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:11,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:11,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:11,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348385588] [2021-12-07 01:45:11,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348385588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:11,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:11,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:45:11,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827873905] [2021-12-07 01:45:11,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:11,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:45:11,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:11,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:45:11,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:11,486 INFO L87 Difference]: Start difference. First operand 929 states and 1697 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:11,512 INFO L93 Difference]: Finished difference Result 1197 states and 2115 transitions. [2021-12-07 01:45:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:45:11,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-07 01:45:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:11,517 INFO L225 Difference]: With dead ends: 1197 [2021-12-07 01:45:11,518 INFO L226 Difference]: Without dead ends: 1051 [2021-12-07 01:45:11,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:11,519 INFO L933 BasicCegarLoop]: 1582 mSDtfsCounter, 1490 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:11,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 1657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-12-07 01:45:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1049. [2021-12-07 01:45:11,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 1047 states have (on average 1.7965616045845272) internal successors, (1881), 1048 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1881 transitions. [2021-12-07 01:45:11,544 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1881 transitions. Word has length 52 [2021-12-07 01:45:11,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:11,544 INFO L470 AbstractCegarLoop]: Abstraction has 1049 states and 1881 transitions. [2021-12-07 01:45:11,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1881 transitions. [2021-12-07 01:45:11,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-07 01:45:11,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:11,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:11,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:45:11,546 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:11,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:11,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1515907135, now seen corresponding path program 1 times [2021-12-07 01:45:11,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:11,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569538717] [2021-12-07 01:45:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:11,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:11,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:11,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569538717] [2021-12-07 01:45:11,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569538717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:11,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:11,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:45:11,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693905370] [2021-12-07 01:45:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:11,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:45:11,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:45:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:11,589 INFO L87 Difference]: Start difference. First operand 1049 states and 1881 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:11,667 INFO L93 Difference]: Finished difference Result 1533 states and 2627 transitions. [2021-12-07 01:45:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:45:11,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-07 01:45:11,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:11,675 INFO L225 Difference]: With dead ends: 1533 [2021-12-07 01:45:11,675 INFO L226 Difference]: Without dead ends: 1267 [2021-12-07 01:45:11,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:11,677 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1486 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:11,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 1656 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:11,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2021-12-07 01:45:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1265. [2021-12-07 01:45:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1263 states have (on average 1.7458432304038005) internal successors, (2205), 1264 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 2205 transitions. [2021-12-07 01:45:11,711 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 2205 transitions. Word has length 52 [2021-12-07 01:45:11,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:11,712 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 2205 transitions. [2021-12-07 01:45:11,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 2205 transitions. [2021-12-07 01:45:11,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-07 01:45:11,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:11,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:11,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:45:11,713 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:11,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1924545907, now seen corresponding path program 1 times [2021-12-07 01:45:11,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:11,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004110957] [2021-12-07 01:45:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:11,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:11,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:11,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004110957] [2021-12-07 01:45:11,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004110957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:11,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:11,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:45:11,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983516633] [2021-12-07 01:45:11,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:11,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:45:11,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:11,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:45:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:45:11,768 INFO L87 Difference]: Start difference. First operand 1265 states and 2205 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:11,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:11,944 INFO L93 Difference]: Finished difference Result 5121 states and 8101 transitions. [2021-12-07 01:45:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 01:45:11,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-07 01:45:11,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:11,965 INFO L225 Difference]: With dead ends: 5121 [2021-12-07 01:45:11,965 INFO L226 Difference]: Without dead ends: 4639 [2021-12-07 01:45:11,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:45:11,968 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 6521 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6521 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:11,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6521 Valid, 2068 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4639 states. [2021-12-07 01:45:12,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4639 to 1745. [2021-12-07 01:45:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1743 states have (on average 1.6689615605278256) internal successors, (2909), 1744 states have internal predecessors, (2909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2909 transitions. [2021-12-07 01:45:12,037 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2909 transitions. Word has length 52 [2021-12-07 01:45:12,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:12,038 INFO L470 AbstractCegarLoop]: Abstraction has 1745 states and 2909 transitions. [2021-12-07 01:45:12,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2909 transitions. [2021-12-07 01:45:12,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-07 01:45:12,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:12,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:12,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 01:45:12,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:12,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1236981091, now seen corresponding path program 1 times [2021-12-07 01:45:12,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:12,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059090419] [2021-12-07 01:45:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:12,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:12,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:12,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059090419] [2021-12-07 01:45:12,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059090419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:12,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:12,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:45:12,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653623319] [2021-12-07 01:45:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:12,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:45:12,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:12,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:45:12,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:12,073 INFO L87 Difference]: Start difference. First operand 1745 states and 2909 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:12,131 INFO L93 Difference]: Finished difference Result 3151 states and 5009 transitions. [2021-12-07 01:45:12,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:45:12,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-07 01:45:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:12,141 INFO L225 Difference]: With dead ends: 3151 [2021-12-07 01:45:12,141 INFO L226 Difference]: Without dead ends: 2189 [2021-12-07 01:45:12,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:45:12,143 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 1478 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:12,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1478 Valid, 1623 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:12,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2021-12-07 01:45:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2021-12-07 01:45:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.6215102974828375) internal successors, (3543), 2186 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3543 transitions. [2021-12-07 01:45:12,205 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3543 transitions. Word has length 54 [2021-12-07 01:45:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:12,205 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 3543 transitions. [2021-12-07 01:45:12,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3543 transitions. [2021-12-07 01:45:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-07 01:45:12,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:12,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:12,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:45:12,206 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1303474603, now seen corresponding path program 1 times [2021-12-07 01:45:12,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:12,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886875248] [2021-12-07 01:45:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:12,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:12,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:12,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886875248] [2021-12-07 01:45:12,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886875248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:12,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:12,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:45:12,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540939522] [2021-12-07 01:45:12,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:12,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:45:12,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:12,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:45:12,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:45:12,304 INFO L87 Difference]: Start difference. First operand 2187 states and 3543 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:12,440 INFO L93 Difference]: Finished difference Result 3591 states and 5617 transitions. [2021-12-07 01:45:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:45:12,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-07 01:45:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:12,454 INFO L225 Difference]: With dead ends: 3591 [2021-12-07 01:45:12,454 INFO L226 Difference]: Without dead ends: 2189 [2021-12-07 01:45:12,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:45:12,457 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 6036 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6036 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:12,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6036 Valid, 1726 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2021-12-07 01:45:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2021-12-07 01:45:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.6105263157894736) internal successors, (3519), 2186 states have internal predecessors, (3519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3519 transitions. [2021-12-07 01:45:12,533 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3519 transitions. Word has length 54 [2021-12-07 01:45:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:12,533 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 3519 transitions. [2021-12-07 01:45:12,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3519 transitions. [2021-12-07 01:45:12,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-07 01:45:12,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:12,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:12,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 01:45:12,534 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:12,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:12,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1338283904, now seen corresponding path program 1 times [2021-12-07 01:45:12,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:12,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869621147] [2021-12-07 01:45:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:12,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:12,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:12,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869621147] [2021-12-07 01:45:12,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869621147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:12,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:12,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:45:12,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880254859] [2021-12-07 01:45:12,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:12,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:45:12,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:12,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:45:12,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:45:12,582 INFO L87 Difference]: Start difference. First operand 2187 states and 3519 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:12,706 INFO L93 Difference]: Finished difference Result 3589 states and 5568 transitions. [2021-12-07 01:45:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:45:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-07 01:45:12,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:12,716 INFO L225 Difference]: With dead ends: 3589 [2021-12-07 01:45:12,716 INFO L226 Difference]: Without dead ends: 2187 [2021-12-07 01:45:12,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:45:12,718 INFO L933 BasicCegarLoop]: 1503 mSDtfsCounter, 4595 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:12,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4595 Valid, 2977 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-12-07 01:45:12,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2187. [2021-12-07 01:45:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.59954233409611) internal successors, (3495), 2186 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3495 transitions. [2021-12-07 01:45:12,785 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3495 transitions. Word has length 55 [2021-12-07 01:45:12,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:12,786 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 3495 transitions. [2021-12-07 01:45:12,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3495 transitions. [2021-12-07 01:45:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-07 01:45:12,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:12,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:12,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 01:45:12,787 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:12,787 INFO L85 PathProgramCache]: Analyzing trace with hash 637219326, now seen corresponding path program 1 times [2021-12-07 01:45:12,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:12,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794699934] [2021-12-07 01:45:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:12,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:12,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:12,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794699934] [2021-12-07 01:45:12,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794699934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:12,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:12,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:45:12,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150080925] [2021-12-07 01:45:12,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:12,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:45:12,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:12,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:45:12,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:45:12,841 INFO L87 Difference]: Start difference. First operand 2187 states and 3495 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:12,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:12,959 INFO L93 Difference]: Finished difference Result 3589 states and 5520 transitions. [2021-12-07 01:45:12,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:45:12,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-07 01:45:12,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:12,968 INFO L225 Difference]: With dead ends: 3589 [2021-12-07 01:45:12,968 INFO L226 Difference]: Without dead ends: 2187 [2021-12-07 01:45:12,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:45:12,970 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 4627 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:12,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4627 Valid, 2982 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:12,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-12-07 01:45:13,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2187. [2021-12-07 01:45:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.588558352402746) internal successors, (3471), 2186 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:13,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3471 transitions. [2021-12-07 01:45:13,038 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3471 transitions. Word has length 55 [2021-12-07 01:45:13,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:13,038 INFO L470 AbstractCegarLoop]: Abstraction has 2187 states and 3471 transitions. [2021-12-07 01:45:13,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3471 transitions. [2021-12-07 01:45:13,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-07 01:45:13,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:13,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:13,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 01:45:13,039 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:13,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:13,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1917083004, now seen corresponding path program 1 times [2021-12-07 01:45:13,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:13,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908377537] [2021-12-07 01:45:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:13,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:13,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:13,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908377537] [2021-12-07 01:45:13,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908377537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:13,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:13,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:45:13,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601810265] [2021-12-07 01:45:13,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:13,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:45:13,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:45:13,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:45:13,085 INFO L87 Difference]: Start difference. First operand 2187 states and 3471 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:13,287 INFO L93 Difference]: Finished difference Result 3418 states and 5169 transitions. [2021-12-07 01:45:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:45:13,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-07 01:45:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:13,305 INFO L225 Difference]: With dead ends: 3418 [2021-12-07 01:45:13,306 INFO L226 Difference]: Without dead ends: 3416 [2021-12-07 01:45:13,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:45:13,308 INFO L933 BasicCegarLoop]: 1555 mSDtfsCounter, 172 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 6153 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:13,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 6153 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states. [2021-12-07 01:45:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 2283. [2021-12-07 01:45:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2283 states, 2281 states have (on average 1.5602805786935554) internal successors, (3559), 2282 states have internal predecessors, (3559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:13,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3559 transitions. [2021-12-07 01:45:13,402 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3559 transitions. Word has length 55 [2021-12-07 01:45:13,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:13,402 INFO L470 AbstractCegarLoop]: Abstraction has 2283 states and 3559 transitions. [2021-12-07 01:45:13,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:13,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3559 transitions. [2021-12-07 01:45:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-07 01:45:13,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:13,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:13,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 01:45:13,403 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:13,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1748179653, now seen corresponding path program 1 times [2021-12-07 01:45:13,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:13,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841263311] [2021-12-07 01:45:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:13,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:13,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:13,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841263311] [2021-12-07 01:45:13,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841263311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:13,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:13,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:45:13,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068158938] [2021-12-07 01:45:13,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:13,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:45:13,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:13,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:45:13,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:45:13,448 INFO L87 Difference]: Start difference. First operand 2283 states and 3559 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:18,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:18,011 INFO L93 Difference]: Finished difference Result 4538 states and 7868 transitions. [2021-12-07 01:45:18,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:45:18,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-12-07 01:45:18,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:18,024 INFO L225 Difference]: With dead ends: 4538 [2021-12-07 01:45:18,025 INFO L226 Difference]: Without dead ends: 3785 [2021-12-07 01:45:18,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:45:18,027 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 2373 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:18,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2373 Valid, 807 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-07 01:45:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2021-12-07 01:45:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3785. [2021-12-07 01:45:18,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 3783 states have (on average 1.5027755749405234) internal successors, (5685), 3784 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5685 transitions. [2021-12-07 01:45:18,150 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5685 transitions. Word has length 60 [2021-12-07 01:45:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:18,150 INFO L470 AbstractCegarLoop]: Abstraction has 3785 states and 5685 transitions. [2021-12-07 01:45:18,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5685 transitions. [2021-12-07 01:45:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-07 01:45:18,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:18,152 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:18,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 01:45:18,152 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:18,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash -484645446, now seen corresponding path program 1 times [2021-12-07 01:45:18,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:18,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960062662] [2021-12-07 01:45:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:18,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:45:18,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:18,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960062662] [2021-12-07 01:45:18,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960062662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:18,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:18,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:45:18,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453527511] [2021-12-07 01:45:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:18,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:45:18,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:18,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:45:18,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:45:18,202 INFO L87 Difference]: Start difference. First operand 3785 states and 5685 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:18,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:18,560 INFO L93 Difference]: Finished difference Result 10091 states and 14454 transitions. [2021-12-07 01:45:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:45:18,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-07 01:45:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:18,576 INFO L225 Difference]: With dead ends: 10091 [2021-12-07 01:45:18,576 INFO L226 Difference]: Without dead ends: 8593 [2021-12-07 01:45:18,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:45:18,581 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 4749 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4749 SdHoareTripleChecker+Valid, 3340 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:18,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4749 Valid, 3340 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:18,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2021-12-07 01:45:18,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 5281. [2021-12-07 01:45:18,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 5279 states have (on average 1.4678916461451033) internal successors, (7749), 5280 states have internal predecessors, (7749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 7749 transitions. [2021-12-07 01:45:18,777 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 7749 transitions. Word has length 79 [2021-12-07 01:45:18,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:18,777 INFO L470 AbstractCegarLoop]: Abstraction has 5281 states and 7749 transitions. [2021-12-07 01:45:18,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:18,777 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 7749 transitions. [2021-12-07 01:45:18,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-07 01:45:18,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:18,779 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:18,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 01:45:18,779 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2041539034, now seen corresponding path program 1 times [2021-12-07 01:45:18,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:18,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093453374] [2021-12-07 01:45:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:18,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 01:45:18,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:18,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093453374] [2021-12-07 01:45:18,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093453374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:18,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:18,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:45:18,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224264347] [2021-12-07 01:45:18,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:18,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:45:18,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:18,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:45:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:45:18,830 INFO L87 Difference]: Start difference. First operand 5281 states and 7749 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:19,206 INFO L93 Difference]: Finished difference Result 11587 states and 16518 transitions. [2021-12-07 01:45:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:45:19,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-07 01:45:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:19,225 INFO L225 Difference]: With dead ends: 11587 [2021-12-07 01:45:19,225 INFO L226 Difference]: Without dead ends: 10089 [2021-12-07 01:45:19,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:45:19,229 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 4706 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4706 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:19,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4706 Valid, 3379 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:19,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10089 states. [2021-12-07 01:45:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10089 to 7529. [2021-12-07 01:45:19,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7529 states, 7527 states have (on average 1.4381559718347283) internal successors, (10825), 7528 states have internal predecessors, (10825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7529 states to 7529 states and 10825 transitions. [2021-12-07 01:45:19,513 INFO L78 Accepts]: Start accepts. Automaton has 7529 states and 10825 transitions. Word has length 79 [2021-12-07 01:45:19,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:19,513 INFO L470 AbstractCegarLoop]: Abstraction has 7529 states and 10825 transitions. [2021-12-07 01:45:19,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:19,513 INFO L276 IsEmpty]: Start isEmpty. Operand 7529 states and 10825 transitions. [2021-12-07 01:45:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-07 01:45:19,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:19,515 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:19,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 01:45:19,515 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:19,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1121788422, now seen corresponding path program 1 times [2021-12-07 01:45:19,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:19,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478695797] [2021-12-07 01:45:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:19,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:45:19,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:19,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478695797] [2021-12-07 01:45:19,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478695797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:19,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:19,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:45:19,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802416884] [2021-12-07 01:45:19,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:19,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:45:19,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:45:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:45:19,558 INFO L87 Difference]: Start difference. First operand 7529 states and 10825 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:20,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:20,054 INFO L93 Difference]: Finished difference Result 13083 states and 18582 transitions. [2021-12-07 01:45:20,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:45:20,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-07 01:45:20,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:20,073 INFO L225 Difference]: With dead ends: 13083 [2021-12-07 01:45:20,073 INFO L226 Difference]: Without dead ends: 11585 [2021-12-07 01:45:20,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:45:20,077 INFO L933 BasicCegarLoop]: 1593 mSDtfsCounter, 4740 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4740 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:20,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4740 Valid, 3382 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:20,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11585 states. [2021-12-07 01:45:20,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11585 to 9025. [2021-12-07 01:45:20,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9025 states, 9023 states have (on average 1.428460600687133) internal successors, (12889), 9024 states have internal predecessors, (12889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9025 states to 9025 states and 12889 transitions. [2021-12-07 01:45:20,442 INFO L78 Accepts]: Start accepts. Automaton has 9025 states and 12889 transitions. Word has length 79 [2021-12-07 01:45:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:20,442 INFO L470 AbstractCegarLoop]: Abstraction has 9025 states and 12889 transitions. [2021-12-07 01:45:20,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:20,442 INFO L276 IsEmpty]: Start isEmpty. Operand 9025 states and 12889 transitions. [2021-12-07 01:45:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-07 01:45:20,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:20,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:20,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 01:45:20,445 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1937719834, now seen corresponding path program 1 times [2021-12-07 01:45:20,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:20,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652425648] [2021-12-07 01:45:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:20,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:45:20,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:20,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652425648] [2021-12-07 01:45:20,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652425648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:45:20,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:45:20,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:45:20,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28244573] [2021-12-07 01:45:20,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:45:20,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:45:20,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:45:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:45:20,490 INFO L87 Difference]: Start difference. First operand 9025 states and 12889 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:20,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:20,990 INFO L93 Difference]: Finished difference Result 13699 states and 19446 transitions. [2021-12-07 01:45:20,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:45:20,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-07 01:45:20,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:21,004 INFO L225 Difference]: With dead ends: 13699 [2021-12-07 01:45:21,004 INFO L226 Difference]: Without dead ends: 12641 [2021-12-07 01:45:21,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:45:21,008 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 4739 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:21,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 3335 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:45:21,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12641 states. [2021-12-07 01:45:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12641 to 10081. [2021-12-07 01:45:21,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10081 states, 10079 states have (on average 1.42484373449747) internal successors, (14361), 10080 states have internal predecessors, (14361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10081 states to 10081 states and 14361 transitions. [2021-12-07 01:45:21,435 INFO L78 Accepts]: Start accepts. Automaton has 10081 states and 14361 transitions. Word has length 79 [2021-12-07 01:45:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:21,436 INFO L470 AbstractCegarLoop]: Abstraction has 10081 states and 14361 transitions. [2021-12-07 01:45:21,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 10081 states and 14361 transitions. [2021-12-07 01:45:21,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-07 01:45:21,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:21,438 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:21,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 01:45:21,438 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:21,439 INFO L85 PathProgramCache]: Analyzing trace with hash -596667294, now seen corresponding path program 1 times [2021-12-07 01:45:21,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:21,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725046356] [2021-12-07 01:45:21,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:21,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:21,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:21,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725046356] [2021-12-07 01:45:21,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725046356] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:45:21,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103374185] [2021-12-07 01:45:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:21,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:21,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:21,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:21,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:45:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:21,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-07 01:45:21,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:21,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:22,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103374185] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:22,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:45:22,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 6] total 23 [2021-12-07 01:45:22,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422695569] [2021-12-07 01:45:22,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:22,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-07 01:45:22,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-07 01:45:22,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-12-07 01:45:22,234 INFO L87 Difference]: Start difference. First operand 10081 states and 14361 transitions. Second operand has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:38,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:45:38,714 INFO L93 Difference]: Finished difference Result 151567 states and 207785 transitions. [2021-12-07 01:45:38,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2021-12-07 01:45:38,715 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-12-07 01:45:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:45:38,928 INFO L225 Difference]: With dead ends: 151567 [2021-12-07 01:45:38,928 INFO L226 Difference]: Without dead ends: 142513 [2021-12-07 01:45:38,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35111 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9618, Invalid=67388, Unknown=0, NotChecked=0, Total=77006 [2021-12-07 01:45:38,974 INFO L933 BasicCegarLoop]: 1690 mSDtfsCounter, 22745 mSDsluCounter, 11026 mSDsCounter, 0 mSdLazyCounter, 4070 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22745 SdHoareTripleChecker+Valid, 12716 SdHoareTripleChecker+Invalid, 4977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 4070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:45:38,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22745 Valid, 12716 Invalid, 4977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 4070 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-07 01:45:39,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142513 states. [2021-12-07 01:45:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142513 to 74356. [2021-12-07 01:45:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74356 states, 74354 states have (on average 1.3645533528794684) internal successors, (101460), 74355 states have internal predecessors, (101460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74356 states to 74356 states and 101460 transitions. [2021-12-07 01:45:44,230 INFO L78 Accepts]: Start accepts. Automaton has 74356 states and 101460 transitions. Word has length 80 [2021-12-07 01:45:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:45:44,231 INFO L470 AbstractCegarLoop]: Abstraction has 74356 states and 101460 transitions. [2021-12-07 01:45:44,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.869565217391305) internal successors, (227), 23 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:45:44,231 INFO L276 IsEmpty]: Start isEmpty. Operand 74356 states and 101460 transitions. [2021-12-07 01:45:44,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-07 01:45:44,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:45:44,235 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:45:44,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:45:44,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 01:45:44,437 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:45:44,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:45:44,438 INFO L85 PathProgramCache]: Analyzing trace with hash 2064719954, now seen corresponding path program 1 times [2021-12-07 01:45:44,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:45:44,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698330749] [2021-12-07 01:45:44,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:44,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:45:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:44,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:45:44,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698330749] [2021-12-07 01:45:44,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698330749] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:45:44,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740822911] [2021-12-07 01:45:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:45:44,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:45:44,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:45:44,565 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:45:44,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:45:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:45:44,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 01:45:44,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:45:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:45,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:45:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:45:45,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740822911] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:45:45,540 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:45:45,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2021-12-07 01:45:45,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794141554] [2021-12-07 01:45:45,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:45:45,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-07 01:45:45,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:45:45,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-07 01:45:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2021-12-07 01:45:45,542 INFO L87 Difference]: Start difference. First operand 74356 states and 101460 transitions. Second operand has 26 states, 26 states have (on average 7.884615384615385) internal successors, (205), 25 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:46:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:46:59,319 INFO L93 Difference]: Finished difference Result 977724 states and 1300178 transitions. [2021-12-07 01:46:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2021-12-07 01:46:59,320 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.884615384615385) internal successors, (205), 25 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-07 01:46:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:47:00,822 INFO L225 Difference]: With dead ends: 977724 [2021-12-07 01:47:00,822 INFO L226 Difference]: Without dead ends: 905655 [2021-12-07 01:47:01,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16541 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=5806, Invalid=36836, Unknown=0, NotChecked=0, Total=42642 [2021-12-07 01:47:01,170 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 20736 mSDsluCounter, 9324 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20736 SdHoareTripleChecker+Valid, 10998 SdHoareTripleChecker+Invalid, 2519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:47:01,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20736 Valid, 10998 Invalid, 2519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-07 01:47:01,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905655 states. [2021-12-07 01:47:31,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905655 to 347137. [2021-12-07 01:47:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347137 states, 347135 states have (on average 1.3503939389574662) internal successors, (468769), 347136 states have internal predecessors, (468769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:47:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347137 states to 347137 states and 468769 transitions. [2021-12-07 01:47:32,536 INFO L78 Accepts]: Start accepts. Automaton has 347137 states and 468769 transitions. Word has length 81 [2021-12-07 01:47:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:47:32,536 INFO L470 AbstractCegarLoop]: Abstraction has 347137 states and 468769 transitions. [2021-12-07 01:47:32,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.884615384615385) internal successors, (205), 25 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:47:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 347137 states and 468769 transitions. [2021-12-07 01:47:32,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-07 01:47:32,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:47:32,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:47:32,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-07 01:47:32,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:47:32,745 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:47:32,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:47:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 526176474, now seen corresponding path program 1 times [2021-12-07 01:47:32,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:47:32,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162215308] [2021-12-07 01:47:32,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:47:32,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:47:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:47:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:47:32,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:47:32,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162215308] [2021-12-07 01:47:32,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162215308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:47:32,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:47:32,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:47:32,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063753470] [2021-12-07 01:47:32,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:47:32,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:47:32,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:47:32,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:47:32,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:47:32,804 INFO L87 Difference]: Start difference. First operand 347137 states and 468769 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:47:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:47:59,414 INFO L93 Difference]: Finished difference Result 691989 states and 933943 transitions. [2021-12-07 01:47:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:47:59,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-07 01:47:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:47:59,916 INFO L225 Difference]: With dead ends: 691989 [2021-12-07 01:47:59,916 INFO L226 Difference]: Without dead ends: 347139 [2021-12-07 01:48:00,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:48:00,088 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 37 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:00,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 3084 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:48:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347139 states. [2021-12-07 01:48:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347139 to 339649. [2021-12-07 01:48:27,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339649 states, 339647 states have (on average 1.3284645529034556) internal successors, (451209), 339648 states have internal predecessors, (451209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339649 states to 339649 states and 451209 transitions. [2021-12-07 01:48:28,357 INFO L78 Accepts]: Start accepts. Automaton has 339649 states and 451209 transitions. Word has length 81 [2021-12-07 01:48:28,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:28,357 INFO L470 AbstractCegarLoop]: Abstraction has 339649 states and 451209 transitions. [2021-12-07 01:48:28,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand 339649 states and 451209 transitions. [2021-12-07 01:48:28,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-07 01:48:28,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:28,361 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:28,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 01:48:28,361 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:48:28,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:28,362 INFO L85 PathProgramCache]: Analyzing trace with hash 252488762, now seen corresponding path program 1 times [2021-12-07 01:48:28,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:48:28,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258975198] [2021-12-07 01:48:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:28,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:48:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:48:28,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:48:28,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258975198] [2021-12-07 01:48:28,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258975198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:48:28,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:48:28,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:48:28,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393702759] [2021-12-07 01:48:28,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:48:28,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:48:28,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:48:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:48:28,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:48:28,388 INFO L87 Difference]: Start difference. First operand 339649 states and 451209 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:43,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:48:43,366 INFO L93 Difference]: Finished difference Result 528637 states and 700489 transitions. [2021-12-07 01:48:43,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:48:43,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-07 01:48:43,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:48:43,618 INFO L225 Difference]: With dead ends: 528637 [2021-12-07 01:48:43,618 INFO L226 Difference]: Without dead ends: 191275 [2021-12-07 01:48:43,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:48:43,749 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 30 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:43,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 3076 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:48:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191275 states. [2021-12-07 01:48:58,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191275 to 185945. [2021-12-07 01:48:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185945 states, 185943 states have (on average 1.2953593305475335) internal successors, (240863), 185944 states have internal predecessors, (240863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:58,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185945 states to 185945 states and 240863 transitions. [2021-12-07 01:48:58,810 INFO L78 Accepts]: Start accepts. Automaton has 185945 states and 240863 transitions. Word has length 81 [2021-12-07 01:48:58,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:58,810 INFO L470 AbstractCegarLoop]: Abstraction has 185945 states and 240863 transitions. [2021-12-07 01:48:58,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:58,810 INFO L276 IsEmpty]: Start isEmpty. Operand 185945 states and 240863 transitions. [2021-12-07 01:48:58,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-07 01:48:58,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:58,812 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:58,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 01:48:58,813 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:48:58,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 176324506, now seen corresponding path program 1 times [2021-12-07 01:48:58,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:48:58,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210285606] [2021-12-07 01:48:58,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:58,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:48:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:48:58,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:48:58,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210285606] [2021-12-07 01:48:58,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210285606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:48:58,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:48:58,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:48:58,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901828667] [2021-12-07 01:48:58,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:48:58,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:48:58,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:48:58,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:48:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:48:58,838 INFO L87 Difference]: Start difference. First operand 185945 states and 240863 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:49:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:49:05,509 INFO L93 Difference]: Finished difference Result 267350 states and 345773 transitions. [2021-12-07 01:49:05,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:49:05,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-07 01:49:05,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:49:05,605 INFO L225 Difference]: With dead ends: 267350 [2021-12-07 01:49:05,605 INFO L226 Difference]: Without dead ends: 83692 [2021-12-07 01:49:05,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:49:05,678 INFO L933 BasicCegarLoop]: 1551 mSDtfsCounter, 24 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:49:05,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 3066 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:49:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83692 states. [2021-12-07 01:49:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83692 to 75098. [2021-12-07 01:49:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75098 states, 75096 states have (on average 1.2881644827953553) internal successors, (96736), 75097 states have internal predecessors, (96736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:49:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75098 states to 75098 states and 96736 transitions. [2021-12-07 01:49:11,884 INFO L78 Accepts]: Start accepts. Automaton has 75098 states and 96736 transitions. Word has length 81 [2021-12-07 01:49:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:49:11,884 INFO L470 AbstractCegarLoop]: Abstraction has 75098 states and 96736 transitions. [2021-12-07 01:49:11,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:49:11,884 INFO L276 IsEmpty]: Start isEmpty. Operand 75098 states and 96736 transitions. [2021-12-07 01:49:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-07 01:49:11,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:49:11,886 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:49:11,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 01:49:11,887 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:49:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:49:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1081869670, now seen corresponding path program 1 times [2021-12-07 01:49:11,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:49:11,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543363932] [2021-12-07 01:49:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:49:11,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:49:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:49:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-07 01:49:11,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:49:11,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543363932] [2021-12-07 01:49:11,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543363932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:49:11,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:49:11,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:49:11,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353158715] [2021-12-07 01:49:11,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:49:11,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:49:11,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:49:11,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:49:11,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:49:11,924 INFO L87 Difference]: Start difference. First operand 75098 states and 96736 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:49:16,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:49:16,544 INFO L93 Difference]: Finished difference Result 130372 states and 167509 transitions. [2021-12-07 01:49:16,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:49:16,545 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-07 01:49:16,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:49:16,608 INFO L225 Difference]: With dead ends: 130372 [2021-12-07 01:49:16,608 INFO L226 Difference]: Without dead ends: 57678 [2021-12-07 01:49:16,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:49:16,635 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 4632 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4632 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:49:16,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4632 Valid, 2980 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:49:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57678 states. [2021-12-07 01:49:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57678 to 57678. [2021-12-07 01:49:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57678 states, 57676 states have (on average 1.2705804840835009) internal successors, (73282), 57677 states have internal predecessors, (73282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:49:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57678 states to 57678 states and 73282 transitions. [2021-12-07 01:49:21,343 INFO L78 Accepts]: Start accepts. Automaton has 57678 states and 73282 transitions. Word has length 81 [2021-12-07 01:49:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:49:21,343 INFO L470 AbstractCegarLoop]: Abstraction has 57678 states and 73282 transitions. [2021-12-07 01:49:21,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:49:21,343 INFO L276 IsEmpty]: Start isEmpty. Operand 57678 states and 73282 transitions. [2021-12-07 01:49:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-07 01:49:21,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:49:21,345 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:49:21,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 01:49:21,345 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:49:21,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:49:21,345 INFO L85 PathProgramCache]: Analyzing trace with hash -958775226, now seen corresponding path program 1 times [2021-12-07 01:49:21,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:49:21,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213690775] [2021-12-07 01:49:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:49:21,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:49:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:49:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 01:49:21,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:49:21,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213690775] [2021-12-07 01:49:21,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213690775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:49:21,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:49:21,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:49:21,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300911692] [2021-12-07 01:49:21,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:49:21,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:49:21,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:49:21,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:49:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:49:21,380 INFO L87 Difference]: Start difference. First operand 57678 states and 73282 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:49:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:49:25,204 INFO L93 Difference]: Finished difference Result 101350 states and 128523 transitions. [2021-12-07 01:49:25,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:49:25,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-07 01:49:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:49:25,252 INFO L225 Difference]: With dead ends: 101350 [2021-12-07 01:49:25,252 INFO L226 Difference]: Without dead ends: 45999 [2021-12-07 01:49:25,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-07 01:49:25,276 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 4637 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:49:25,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4637 Valid, 2978 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:49:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45999 states. [2021-12-07 01:49:29,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45999 to 45999. [2021-12-07 01:49:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45999 states, 45997 states have (on average 1.2624084179403006) internal successors, (58067), 45998 states have internal predecessors, (58067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:49:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45999 states to 45999 states and 58067 transitions. [2021-12-07 01:49:29,114 INFO L78 Accepts]: Start accepts. Automaton has 45999 states and 58067 transitions. Word has length 81 [2021-12-07 01:49:29,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:49:29,114 INFO L470 AbstractCegarLoop]: Abstraction has 45999 states and 58067 transitions. [2021-12-07 01:49:29,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:49:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 45999 states and 58067 transitions. [2021-12-07 01:49:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-07 01:49:29,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:49:29,116 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:49:29,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 01:49:29,116 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:49:29,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:49:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash 584192824, now seen corresponding path program 1 times [2021-12-07 01:49:29,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:49:29,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894969287] [2021-12-07 01:49:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:49:29,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:49:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:49:29,227 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:49:29,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:49:29,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894969287] [2021-12-07 01:49:29,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894969287] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:49:29,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184958534] [2021-12-07 01:49:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:49:29,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:49:29,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:49:29,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:49:29,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:49:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:49:29,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-07 01:49:29,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:49:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:49:41,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:49:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:49:45,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184958534] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:49:45,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:49:45,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 26] total 59 [2021-12-07 01:49:45,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608567362] [2021-12-07 01:49:45,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:49:45,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-12-07 01:49:45,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:49:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-12-07 01:49:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2997, Unknown=1, NotChecked=0, Total=3422 [2021-12-07 01:49:45,161 INFO L87 Difference]: Start difference. First operand 45999 states and 58067 transitions. Second operand has 59 states, 59 states have (on average 3.830508474576271) internal successors, (226), 59 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:55:01,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:55:01,870 INFO L93 Difference]: Finished difference Result 349842 states and 427532 transitions. [2021-12-07 01:55:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 770 states. [2021-12-07 01:55:01,871 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.830508474576271) internal successors, (226), 59 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-12-07 01:55:01,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:55:02,308 INFO L225 Difference]: With dead ends: 349842 [2021-12-07 01:55:02,308 INFO L226 Difference]: Without dead ends: 311042 [2021-12-07 01:55:02,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 820 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316916 ImplicationChecksByTransitivity, 267.0s TimeCoverageRelationStatistics Valid=63385, Invalid=611458, Unknown=19, NotChecked=0, Total=674862 [2021-12-07 01:55:02,427 INFO L933 BasicCegarLoop]: 1905 mSDtfsCounter, 31435 mSDsluCounter, 36661 mSDsCounter, 0 mSdLazyCounter, 12184 mSolverCounterSat, 1684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31435 SdHoareTripleChecker+Valid, 38566 SdHoareTripleChecker+Invalid, 15497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1684 IncrementalHoareTripleChecker+Valid, 12184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1629 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:55:02,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31435 Valid, 38566 Invalid, 15497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1684 Valid, 12184 Invalid, 0 Unknown, 1629 Unchecked, 16.3s Time] [2021-12-07 01:55:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311042 states. [2021-12-07 01:55:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311042 to 117971. [2021-12-07 01:55:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117971 states, 117969 states have (on average 1.2539395943001974) internal successors, (147926), 117970 states have internal predecessors, (147926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:55:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117971 states to 117971 states and 147926 transitions. [2021-12-07 01:55:18,907 INFO L78 Accepts]: Start accepts. Automaton has 117971 states and 147926 transitions. Word has length 82 [2021-12-07 01:55:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:55:18,907 INFO L470 AbstractCegarLoop]: Abstraction has 117971 states and 147926 transitions. [2021-12-07 01:55:18,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.830508474576271) internal successors, (226), 59 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:55:18,907 INFO L276 IsEmpty]: Start isEmpty. Operand 117971 states and 147926 transitions. [2021-12-07 01:55:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-07 01:55:18,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:55:18,909 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:55:18,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-07 01:55:19,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:55:19,110 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:55:19,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:55:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1441826097, now seen corresponding path program 1 times [2021-12-07 01:55:19,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:55:19,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957467612] [2021-12-07 01:55:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:55:19,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:55:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:55:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:55:19,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:55:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957467612] [2021-12-07 01:55:19,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957467612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:55:19,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:55:19,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:55:19,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382728152] [2021-12-07 01:55:19,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:55:19,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:55:19,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:55:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:55:19,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:55:19,154 INFO L87 Difference]: Start difference. First operand 117971 states and 147926 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:55:25,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:55:25,994 INFO L93 Difference]: Finished difference Result 167840 states and 209440 transitions. [2021-12-07 01:55:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:55:25,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-12-07 01:55:25,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:55:26,058 INFO L225 Difference]: With dead ends: 167840 [2021-12-07 01:55:26,058 INFO L226 Difference]: Without dead ends: 56359 [2021-12-07 01:55:26,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:55:26,104 INFO L933 BasicCegarLoop]: 1544 mSDtfsCounter, 25 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:55:26,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 3040 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:55:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56359 states. [2021-12-07 01:55:32,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56359 to 56357. [2021-12-07 01:55:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56357 states, 56355 states have (on average 1.2293319137609795) internal successors, (69279), 56356 states have internal predecessors, (69279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:55:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56357 states to 56357 states and 69279 transitions. [2021-12-07 01:55:32,932 INFO L78 Accepts]: Start accepts. Automaton has 56357 states and 69279 transitions. Word has length 82 [2021-12-07 01:55:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:55:32,932 INFO L470 AbstractCegarLoop]: Abstraction has 56357 states and 69279 transitions. [2021-12-07 01:55:32,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:55:32,932 INFO L276 IsEmpty]: Start isEmpty. Operand 56357 states and 69279 transitions. [2021-12-07 01:55:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-07 01:55:32,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:55:32,934 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:55:32,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-07 01:55:32,934 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:55:32,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:55:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1529807351, now seen corresponding path program 1 times [2021-12-07 01:55:32,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:55:32,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967338127] [2021-12-07 01:55:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:55:32,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:55:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:55:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:55:33,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:55:33,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967338127] [2021-12-07 01:55:33,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967338127] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:55:33,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056652213] [2021-12-07 01:55:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:55:33,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:55:33,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:55:33,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:55:33,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:55:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:55:33,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 01:55:33,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:55:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:55:33,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:55:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:55:34,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056652213] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:55:34,127 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:55:34,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-12-07 01:55:34,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770354715] [2021-12-07 01:55:34,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:55:34,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-07 01:55:34,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:55:34,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-07 01:55:34,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-12-07 01:55:34,128 INFO L87 Difference]: Start difference. First operand 56357 states and 69279 transitions. Second operand has 21 states, 21 states have (on average 9.333333333333334) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:55:46,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:55:46,255 INFO L93 Difference]: Finished difference Result 99636 states and 120274 transitions. [2021-12-07 01:55:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 01:55:46,256 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.333333333333334) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-12-07 01:55:46,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:55:46,355 INFO L225 Difference]: With dead ends: 99636 [2021-12-07 01:55:46,356 INFO L226 Difference]: Without dead ends: 89630 [2021-12-07 01:55:46,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=839, Unknown=0, NotChecked=0, Total=1122 [2021-12-07 01:55:46,380 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 10882 mSDsluCounter, 6333 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10882 SdHoareTripleChecker+Valid, 7861 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 01:55:46,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10882 Valid, 7861 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 01:55:46,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89630 states. [2021-12-07 01:55:53,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89630 to 59824. [2021-12-07 01:55:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59824 states, 59822 states have (on average 1.227040219317308) internal successors, (73404), 59823 states have internal predecessors, (73404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:55:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59824 states to 59824 states and 73404 transitions. [2021-12-07 01:55:54,104 INFO L78 Accepts]: Start accepts. Automaton has 59824 states and 73404 transitions. Word has length 83 [2021-12-07 01:55:54,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:55:54,104 INFO L470 AbstractCegarLoop]: Abstraction has 59824 states and 73404 transitions. [2021-12-07 01:55:54,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.333333333333334) internal successors, (196), 20 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:55:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 59824 states and 73404 transitions. [2021-12-07 01:55:54,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-07 01:55:54,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:55:54,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:55:54,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-07 01:55:54,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-07 01:55:54,308 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:55:54,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:55:54,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1782997605, now seen corresponding path program 1 times [2021-12-07 01:55:54,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:55:54,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229614193] [2021-12-07 01:55:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:55:54,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:55:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:55:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:55:54,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:55:54,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229614193] [2021-12-07 01:55:54,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229614193] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:55:54,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55938361] [2021-12-07 01:55:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:55:54,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:55:54,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:55:54,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:55:54,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:55:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:55:54,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-07 01:55:54,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:55:55,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:55:55,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:55:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:55:56,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55938361] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:55:56,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:55:56,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2021-12-07 01:55:56,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614105280] [2021-12-07 01:55:56,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:55:56,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-07 01:55:56,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:55:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-07 01:55:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2021-12-07 01:55:56,393 INFO L87 Difference]: Start difference. First operand 59824 states and 73404 transitions. Second operand has 34 states, 34 states have (on average 6.617647058823529) internal successors, (225), 34 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:56:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:56:29,391 INFO L93 Difference]: Finished difference Result 143916 states and 171602 transitions. [2021-12-07 01:56:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-12-07 01:56:29,391 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.617647058823529) internal successors, (225), 34 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-12-07 01:56:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:56:29,524 INFO L225 Difference]: With dead ends: 143916 [2021-12-07 01:56:29,524 INFO L226 Difference]: Without dead ends: 113699 [2021-12-07 01:56:29,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9787 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=3662, Invalid=25068, Unknown=0, NotChecked=0, Total=28730 [2021-12-07 01:56:29,551 INFO L933 BasicCegarLoop]: 1712 mSDtfsCounter, 10811 mSDsluCounter, 26059 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10811 SdHoareTripleChecker+Valid, 27771 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 01:56:29,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10811 Valid, 27771 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-07 01:56:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113699 states. [2021-12-07 01:56:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113699 to 44616. [2021-12-07 01:56:36,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44616 states, 44614 states have (on average 1.2269915273232617) internal successors, (54741), 44615 states have internal predecessors, (54741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:56:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44616 states to 44616 states and 54741 transitions. [2021-12-07 01:56:36,403 INFO L78 Accepts]: Start accepts. Automaton has 44616 states and 54741 transitions. Word has length 83 [2021-12-07 01:56:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:56:36,403 INFO L470 AbstractCegarLoop]: Abstraction has 44616 states and 54741 transitions. [2021-12-07 01:56:36,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.617647058823529) internal successors, (225), 34 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:56:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 44616 states and 54741 transitions. [2021-12-07 01:56:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-07 01:56:36,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:56:36,405 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:56:36,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-07 01:56:36,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-07 01:56:36,607 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:56:36,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:56:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1008179547, now seen corresponding path program 1 times [2021-12-07 01:56:36,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:56:36,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851185133] [2021-12-07 01:56:36,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:56:36,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:56:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:56:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:56:36,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:56:36,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851185133] [2021-12-07 01:56:36,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851185133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:56:36,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373845382] [2021-12-07 01:56:36,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:56:36,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:56:36,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:56:36,890 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:56:36,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 01:56:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:56:36,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-07 01:56:36,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:56:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:56:37,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:56:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:56:38,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373845382] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:56:38,594 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:56:38,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2021-12-07 01:56:38,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865574967] [2021-12-07 01:56:38,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:56:38,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-07 01:56:38,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:56:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-07 01:56:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2021-12-07 01:56:38,595 INFO L87 Difference]: Start difference. First operand 44616 states and 54741 transitions. Second operand has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:57:00,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:57:00,056 INFO L93 Difference]: Finished difference Result 131630 states and 162287 transitions. [2021-12-07 01:57:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-07 01:57:00,057 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-12-07 01:57:00,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:57:00,189 INFO L225 Difference]: With dead ends: 131630 [2021-12-07 01:57:00,189 INFO L226 Difference]: Without dead ends: 114480 [2021-12-07 01:57:00,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=775, Invalid=2885, Unknown=0, NotChecked=0, Total=3660 [2021-12-07 01:57:00,211 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 13118 mSDsluCounter, 10246 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13118 SdHoareTripleChecker+Valid, 11883 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 01:57:00,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13118 Valid, 11883 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 01:57:00,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114480 states. [2021-12-07 01:57:06,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114480 to 34593. [2021-12-07 01:57:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34593 states, 34591 states have (on average 1.2294527478245787) internal successors, (42528), 34592 states have internal predecessors, (42528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:57:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34593 states to 34593 states and 42528 transitions. [2021-12-07 01:57:06,321 INFO L78 Accepts]: Start accepts. Automaton has 34593 states and 42528 transitions. Word has length 83 [2021-12-07 01:57:06,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:57:06,321 INFO L470 AbstractCegarLoop]: Abstraction has 34593 states and 42528 transitions. [2021-12-07 01:57:06,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.40625) internal successors, (205), 32 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:57:06,321 INFO L276 IsEmpty]: Start isEmpty. Operand 34593 states and 42528 transitions. [2021-12-07 01:57:06,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-07 01:57:06,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:57:06,322 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:57:06,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 01:57:06,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-07 01:57:06,524 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:57:06,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:57:06,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1215076864, now seen corresponding path program 1 times [2021-12-07 01:57:06,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:57:06,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52979868] [2021-12-07 01:57:06,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:57:06,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:57:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:57:06,832 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:57:06,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:57:06,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52979868] [2021-12-07 01:57:06,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52979868] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:57:06,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223791113] [2021-12-07 01:57:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:57:06,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:57:06,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:57:06,834 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:57:06,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e900c777-9fb8-42a3-85bb-68578dd36d84/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 01:57:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:57:06,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 01:57:06,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:57:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:57:08,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 01:57:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:57:10,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223791113] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 01:57:10,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 01:57:10,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 16] total 40 [2021-12-07 01:57:10,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957850770] [2021-12-07 01:57:10,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 01:57:10,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-07 01:57:10,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:57:10,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-07 01:57:10,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1385, Unknown=0, NotChecked=0, Total=1560 [2021-12-07 01:57:10,348 INFO L87 Difference]: Start difference. First operand 34593 states and 42528 transitions. Second operand has 40 states, 40 states have (on average 5.125) internal successors, (205), 40 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:57:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:57:31,065 INFO L93 Difference]: Finished difference Result 90237 states and 110595 transitions. [2021-12-07 01:57:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-07 01:57:31,066 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.125) internal successors, (205), 40 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-12-07 01:57:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:57:31,153 INFO L225 Difference]: With dead ends: 90237 [2021-12-07 01:57:31,153 INFO L226 Difference]: Without dead ends: 75081 [2021-12-07 01:57:31,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1647, Invalid=7283, Unknown=0, NotChecked=0, Total=8930 [2021-12-07 01:57:31,174 INFO L933 BasicCegarLoop]: 1768 mSDtfsCounter, 22368 mSDsluCounter, 24749 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22368 SdHoareTripleChecker+Valid, 26517 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 01:57:31,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22368 Valid, 26517 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 01:57:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75081 states.